/***************************************************************************
 *   Copyright (C) 2009 by Bernhard Neuhofer   *
 *   mail@bneu.at   *
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 *   This program is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
 *   GNU General Public License for more details.                          *
 *                                                                         *
 *   You should have received a copy of the GNU General Public License     *
 *   along with this program; if not, write to the                         *
 *   Free Software Foundation, Inc.,                                       *
 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
 ***************************************************************************/

#ifndef SCHEDULER_H
#define SCHEDULER_H

#include "AbstractLp.h"
#include <map>
/**
* @brief Abstract root for every concrete scheduler implementation (Strategy Pattern).
* A scheduler is attached to a submodel manager an deicdes which LPs
* <code>step</code> method is invoked next.
*/
class Scheduler
{
protected:
    /** Hash_map to hold the LP ID/LP reference pairs of this submodel manager*/
    map<unsigned int,AbstractLp*> _lpRefs;
    	/** Array holding the IDs of the LPs present at this submodel manager*/
	vector<unsigned int> _ids;
public:


/**
 * Chooses the LP whose <code>doStep</code> method is called next.
 * @return AbstractLp Reference to the selected LP
 */
virtual AbstractLp* next()=0;

/**
 * Sets the LP ID/LP reference hash
 * @param lpRefs The hash from the SM
 */
virtual void updateScheduler(map<unsigned int, AbstractLp*> lpRefs);



};

#endif